PSI Knee
The PSI Knee system helps plan and position knee replacement components using patient-specific surgical guides. Planning software creates joint models from radiological images, allowing the…
The PSI Knee system helps plan and position knee replacement components using patient-specific surgical guides. Planning software creates joint models from radiological images, allowing the surgeon to select component placement relative to anatomical landmarks.
Customized guides are fabricated from the plan to fit the patient’s bone contours. They reference the intended femoral and tibial component positions during surgery, with separate tibial guides for cutting guide placement and rotational positioning.
Compatibility
The system is used with the specified NexGen and Persona fixed-bearing knee replacement systems in accordance with their indications. Patient-specific guides are intended for single use and assist placement of the implants rather than functioning as implanted components.
Who Else Makes It
Concentrated in Jiangsu (10), Shanghai (4), Beijing (3). 13 of them are registered as contract manufacturers, able to build to a buyer’s own specification.
| Manufacturer | City | Province | Registered as | Device types |
|---|---|---|---|---|
| MicroPort Orthopedics Global Supply Center Limited | Shanghai | Shanghai | Contract manufacturer | 82 |
| Zhejiang Biomet Medical Products Co., Ltd. | Jinhua | Zhejiang | Contract manufacturer | 74 |
| Paragon Medical Device (Changzhou) Co., Ltd. | Changzhou | Jiangsu | Contract manufacturer | 53 |
| Canwell Medical Co., Ltd. | Jinhua | Zhejiang | Contract manufacturer | 42 |
| Suzhou Elite Precision Machinery Co., Ltd. | Kunshan | Jiangsu | Contract manufacturer | 35 |
| Guangzhou Aquila Precise Tools Limited | Guangzhou | Guangdong | Contract manufacturer | 28 |
| B-ONE Medical (Suzhou) Co., Ltd. | Suzhou | Jiangsu | Contract manufacturer | 23 |
| LX Precision Shanghai Co Ltd | Shanghai | Shanghai | Contract manufacturer | 19 |
| Stryker (Suzhou) Medical Technology Co., Ltd. | Suzhou | Jiangsu | Contract manufacturer | 19 |
| Stryker Orthmed (Changzhou) Medical Instrument Co., Ltd. | Changzhou | Jiangsu | Contract manufacturer | 10 |
| b-ONE Medical (Beijing) Co., Ltd. | Beijing | Beijing | Contract manufacturer | 7 |
| Changzhou Wastonortho Medical Appliance Co., Ltd. | Changzhou | Jiangsu | Contract manufacturer | 5 |
Showing 12 of 21. All 21 manufacturers in China registered for Prosthesis, Knee, Patellofemorotibial, Semi-Constrained, Cemented, Polymer/Metal/Polymer
Record
| Listed by | Orthosoft, Inc., Canada |
|---|---|
| FDA product code | JWH |
| Device type | Prosthesis, Knee, Patellofemorotibial, Semi-Constrained, Cemented, Polymer/Metal/Polymer |
| Device class | Class 2 |
| Regulation | 21 CFR 888.3560 |
| 510(k) | K131409 |
| Record published | 2022-08-11 |
Specifications
| MRI safety | Labeling does not contain MRI Safety Information |
|---|---|
| Prescription | Prescription only |
| Label carries | lot or batch number |
Catalogue Numbers
| Catalogue number | Size | Status |
|---|---|---|
| 803.302 | In distribution |
Same Product Code
| Product | Sold by | Catalogue numbers |
|---|---|---|
| Prophecy® | Microport Orthopedics Inc. | 4,423 |
| Exult Knee Replacement System | Corentec Co., Ltd. | 1,770 |
| Freedom | Maxx Orthopedics Inc. | 1,693 |
| Legion | Smith & Nephew, Inc. | 1,534 |
| MyKnee | Medacta International SA | 1,466 |
| Journey | Smith & Nephew, Inc. | 1,339 |
| Persona® | Zimmer, Inc. | 1,254 |
| DJO Surgical | Encore Medical, L.P. | 1,131 |
| U2 Total Knee System | United Orthopedic Corp. | 1,078 |
| CKS Plus | Shalby Advanced Technologies, Inc. | 1,024 |
| Lospa Modular Knee System | Corentec Co., Ltd. | 1,020 |
| Natural-Knee® | Zimmer, Inc. | 980 |
Showing 12 of 1,175. All products under Prosthesis, Knee, Patellofemorotibial, Semi-Constrained, Cemented, Polymer/Metal/Polymer
510(K) Clearances
| Clearance | Decision date |
|---|---|
| K131409 | 2013-09-13 |
Recalls Naming This Product
1 recall names this product by its own identifier, the 510(k) it is cleared under.
| Recalled by | Identified by | Initiated | FDA class | Root cause | Reason | Quantity | Closed |
|---|---|---|---|---|---|---|---|
| Zimmer CAS | 510(k) number | 2014-11-03 | Class II | Software design | Internal discovery found that the MRI scans in some PSI knee guides involved an additional rotation adjustments that could potentially lead to misalignment due to a design flaw. | 15 | 2015-02-13 |
Source: U.S. FDA establishment registration and device listing records, public domain. Restructured for clarity and searchability. Not affiliated with or endorsed by the FDA. Records are records: nothing here is an offer of sale.